参数资料
型号: MAX1225ETC+T
厂商: Maxim Integrated Products
文件页数: 17/18页
文件大小: 0K
描述: IC ADC 12BIT 1.5MSPS 12-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
位数: 12
采样率(每秒): 1.5M
数据接口: MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 18mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WQFN 裸露焊盘
供应商设备封装: 12-TQFN-EP(4x4)
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
MAX1224/MAX1225
1.5Msps, Single-Supply, Low-Power,
True-Differential, 12-Bit ADCs
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
AIN-
Negative Analog Input
2
REF
External Reference Voltage Input. VREF sets the analog input range. Bypass REF with a 0.01F
capacitor and a 4.7F capacitor to RGND.
3
RGND
Reference Ground. Connect RGND to GND.
4VDD
Positive Analog Supply Voltage (+2.7V to +3.6V). Bypass VDD with a 0.01F capacitor and a 10F
capacitor to GND.
5, 11
N.C.
No Connection
6
GND
Ground. GND is internally connected to EP.
7VL
Positive Logic Supply Voltage (1.8V to VDD). Bypass VL with a 0.01F capacitor and a 10F capacitor
to GND.
8
DOUT
Serial Data Output. Data is clocked out on the rising edge of SCLK.
9
CNVST
Convert Start. Forcing CNVST high prepares the part for a conversion. Conversion begins on the
falling edge of CNVST. The sampling instant is defined by the falling edge of CNVST.
10
SCLK
Serial Clock Input. Clocks data out of the serial interface. SCLK also sets the conversion speed.
12
AIN+
Positive Analog Input
EP
Exposed Paddle. EP is internally connected to GND.
Typical Operating Characteristics (continued)
(VDD = +3V, VL = VDD, VREF = 2.048V, fSCLK = 24MHz, fSAMPLE = 1.5Msps, TA = -40°C to +85°C, unless otherwise noted. Typical
values are measured at TA = +25°C)
VDD SUPPLY CURRENT
vs. CONVERSION RATE
MAX1224/25
toc22
fSAMPLE (kHz)
V
DD
SUPPLY
CURRENT
(mA)
1250
1000
750
500
250
3
6
9
0
1500
VL SUPPLY CURRENT vs. TEMPERATURE
MAX1224/25
toc23
TEMPERATURE (
°C)
V
LSUPPLY
CURRENT
(mA)
60
35
10
-15
0.2
0.3
0.5
0.4
0.1
0
-40
85
CONVERSION, VL = 1.8V
CONVERSION, VL = 3V
VL SUPPLY CURRENT
vs. CONVERSION RATE
MAX1224/25
toc24
fSAMPLE (kHz)
V
LSUPPLY
CURRENT
A)
1250
100
750
500
250
50
100
150
200
250
0
1500
VL = 3V
VL = 1.8V
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